Abstract
본 연구에서는 층간 분리된 복합소재 구조의 동적 해석을 고차항 이론에 근간하여 수행하였다. 2차원 유한요소 정식화에서 층간분리영역 경계에서의 변위를 일치시키기 위한 변환기법을 적용하였다. 불안정 영역의 경계는 Bolotin의 이론을 적용하여 산정하였다. 경사판에 대한 해석 결과는 기존 문헌 결과와 잘 일치하였다. 복합소재 적층구조에 대한 새로운 해석 결과들은 다양한 기하학적 영향과의 상호거동 관계를 보여준다. The dynamic analysis of delaminated composite structures is carried out based on the higher order plate theory. In the finite element (FE) formulation, the seven degrees of freedom per each node are used with transformations in order to fit the displacement continuity conditions at the delamination region. The boundaries of the instability regions are determined using the method proposed by Bolotin. The numerical results obtained for skew plates are in good agreement with those reported by other investigators. The new results for delaminated skew plate structures in this study mainly show the effect of the interactions between the geometries and other various parameters.
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